Because rotary support table driven by machinery has long transmission chain, complicated driving devices, many parts and large weight,it is difficult to lay out on some special drill devices and the mobile transport performance of the main machine is affected. For the above problems, a hydraulic rotary support table was designed.Low speed and high torque motor was installed in input shaft of the conventional rotary support table directly. The scheme of hydraulic load sensing system and electro hydraulic proportional control was used. By remote control in dogroom,the table’s speed and torque were controlled accurately,and the problem for application was resolved efficiently.